JPS6387490A - Driving device on earthquake of elevator - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to an elevator earthquake operation device that controls the operation of an elevator when an earthquake occurs.

(Prior Art) Conventionally, as a method for operating an elevator during an earthquake, a first seismic sensor operates at a relatively low level of vibration (for example, 80 gal), and a first seismic sensor operates at a higher level of vibration (for example, 120 gal). It is equipped with a second seismic sensor that operates, and when an earthquake occurs, the first
When the sensor is activated, it enters the earthquake control operation mode, and determines whether the elevator passenger (hereinafter simply referred to as the car) is running or stopped, and if the car is stopped, the elevator is operated on that floor. If the car is in motion, it will stop at the nearest floor, open the door to evacuate passengers, then close the door and wait for the earthquake to subside.

At this time, it is determined whether the second seismic sensor is activated, and if the second
In the case of a large earthquake where the second seismic sensor is activated, there is a strong possibility that some kind of abnormality has occurred in the elevator, so if the second seismic sensor is activated, the elevator should be removed after the earthquake subsides. The plant will also be suspended and will be inspected by specialized engineers and restored in nine months.

On the other hand, if only the first seismic sensor operates and the second seismic sensor does not operate, the first seismic sensor is reset manually or automatically after a predetermined period of time to return to the original normal operation. That's what I do. This method prevents accidents such as the elevator car or the head of the elevator car coming off the guide rail during an earthquake where only the first seismic sensor is activated and the second seismic sensor is not activated. This was done based on the idea that there was no way around it. However, even a very small earthquake can cause resonance in the hanging rope, resulting in large shaking, and in some cases, it can catch equipment in the hoistway at the corner of the elevator.

Furthermore, the elevator cables suspended from the car may also sway and become caught in the hoistway. From this point of view, protectors and protective wires are installed to prevent objects from getting caught, but in high-rise buildings, the amplitude of the shaking is larger than expected, and objects may get caught in unexpected places. In addition to the above-mentioned cases, there is also the possibility that hoistway equipment, building structures, etc. protrude from the elevating part of the passenger compartment, or that the elevating body is about to come off the rail.

Therefore, the conventional method of returning to normal operation without undergoing inspection by a specialist engineer even though the earthquake only caused the operation of the first seismic sensor does not affect a wide area and is difficult to restore after an earthquake. Although it is extremely useful because it can be dealt with in a minimum amount of time, it is clear that it also comes with risks.

To solve this problem, a precautionary measure has been proposed, as disclosed in Japanese Patent Laid-Open No. 17980/1983, in which an unmanned automatic test run is performed before normal operation is resumed. According to this method, safety is improved because normal operation is resumed after an unmanned automatic test operation, but there are additional problems.

(Problem to be Solved by the Invention) In order to restore the elevator to normal operation without inspecting it after an earthquake occurs, there is a method for restoring the elevator after performing an unmanned automatic test operation. In this case, safety will be increased because safety will be confirmed through unmanned automatic driving. However, (1) If automatic test operation is not performed, or even if automatic test operation is performed, it may be dangerous to immediately return to normal operation after one or two round trips.

■ If normal operation is restored within a few minutes after an earthquake occurs, passengers will still feel uneasy (fear of breakdowns that could result in injury or death while traveling).

■ No special consideration has been taken in case the earthquake occurs again while the train is in normal operation.

In other words, earthquakes often occur in succession within a short period of time, so after the first earthquake, there is a certain period of time to prepare for recurrence.
Although it is desirable to take safety measures, no particular consideration has been given to such measures.

Therefore, the purpose of this invention is to ensure sufficient safety even in the event of a recurrence of an earthquake while restoring elevator operation without inspection by a specialist engineer when only the first seismic sensor is in operation, and to ensure safety in the event of a recurrence of an earthquake. Elevator earthquake operation equipment is designed to minimize damage even if the elevator collides with another obstacle or gets caught in a rope, etc., and also reduces the anxiety of passengers. It is about providing.

[Configuration of the Invention (Means for Solving Problems) To achieve the above object, the present invention is configured as follows.

That is, it includes a first vibration sensor that operates with vibrations above a relatively small predetermined level and a second vibration sensor that operates with vibrations higher than the predetermined level. When the car is stopped at the floor position, and then the second
When the first seismic sensor is activated, the operation of the elevator is stopped, and when only the first seismic sensor is activated, the operation of the elevator is restarted after a certain period of time has elapsed, and the elevator is adjusted to the speed standard output by the speed standard generating means. In an earthquake operation system for elevators that is configured to operate at a combined speed, a timer is provided which operates for a predetermined time and generates a low-speed operation command when an operation restart command is given when only the first seismic sensor is operating, and the above-mentioned The speed reference generating means has a mode in which a speed reference is generated for operating the elevator at a rated speed, and a low speed mode in which a speed reference is generated for causing the elevator to run at a speed lower than the rated speed when receiving a low speed operation command from the timer. The configuration is as follows.

(Function) In such a configuration, when the first seismic sensor that operates with relatively small vibrations above a predetermined level is activated, the car is stopped at the floor position, and the second seismic sensor is activated. When the first seismic sensor is activated, the operation of the elevator is stopped, and when only the first seismic sensor is activated, an operation restart command is given after a certain period of time has elapsed, and the elevator operation is restarted. When this operation restart command is given, the timer operates for a predetermined period of time and generates a low-speed operation command. On the other hand, the speed reference generation means has a mode of generating a speed reference for operating the elevator at the rated speed, and a mode for generating a speed reference for operating the elevator at a speed lower than the rated speed when receiving a low speed operation command from the timer. By providing a low-speed mode, upon receiving the low-speed operation command, the speed reference generating means enters the low-speed mode during the operation period of the timer, and the speed reference output during this period becomes the speed reference for low-speed operation. Therefore, during this period, the elevator will be operated at a speed slower than the rated speed.

If the operating speed is reduced, even if the car touches equipment installed in the hoistway or collides with it, the impact will be much smaller, which will prevent a major accident. When an earthquake occurs, there are often aftershocks within a relatively short period of time, but in this case too, by setting the timer for a long time, the safety level will be high even if an earthquake occurs again after operation resumes. Furthermore, even if elevator operations are restarted after an earthquake, passengers may still feel anxious, but this can be reduced by keeping the operating speed slow.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

Figure 1 is a block diagram showing the configuration of this device.
2 is a vibration sensor reset signal generated from the elevator operating device; 2 is a vibration sensor at a relatively low level (e.g., 80 gal); It is a seismic sensor. Further, 3 is a storage device that stores the above-mentioned vibration sensor reset signal 1 and resets this storage with the output of the timer 5.

The timer 5 is operated by the output signal 4 outputted from the storage device 3 when storing the vibration sensor reset signal, and outputs the storage device reset signal 6 after a predetermined period of time has elapsed.

7 is a low speed operation command device, and this low speed operation command device 7
is operated while receiving the output signal 4'jk of the storage device 3 to output a low-speed operation command signal 8 instructing low-speed operation of the car. 9 is a speed reference generator that generates a speed reference signal 10 for slow driving, and upon receiving the low speed driving command signal 8, outputs a speed reference signal at a level lower than the rated speed.

Suppose that an earthquake occurs now in this configuration.

It is assumed that only the tenth seismic sensor 2 operates, and the second gI seismic device (not shown) that operates at a high vibration level does not operate. In this case, as shown in the flowchart of FIG. 2, the elevator operating device 1 checks whether the first seismic sensor 20 is operating (S2), and if it is active, checks the second seismic sensor (S2). If the elevator is not operating, it is checked whether the elevator is running or not (S3), and if it is running, it is stopped at the nearest floor (34), and the door is opened to wait (S5). Then, after a predetermined period of time has elapsed, the door is closed (S6), and it is checked whether the door open button is pressed inside the car (S7).

If it is pressed, the process returns to S5, and if it is not pressed, the process goes to S8. When the earthquake subsides, the 10th seismic sensor reset signal J is issued as a one-shot pulse from the elevator operation device automatically or manually (s8).
The signal is applied to the first CI vibration sensor 2, and the first CI vibration sensor 2 is reset. At the same time, this first vibration sensor reset signal 1 is stored in the storage device 3, and the output signal 4 from the storage device 3 is inputted to the timer 6 and the low-speed operation command device 7. As a result, the low-speed operation command device 7 issues a low-speed operation command signal 8 to the speed reference generator 9, so that the speed reference signal 10 is output from the speed reference generator 9 at a lower level than at the rated speed. When a predetermined period of time has elapsed, the elevator operation device performs door closing control (S6), checks whether the door open button is pressed in the car (87), and if it is not pressed, the first shock is detected. The elevator 2 is reset (S8) and starts operating.Since the speed reference signal IQ is at a low level, the elevator is operated at a low speed (S9).

When a predetermined period of time has elapsed (810), a memory device reset signal 6 is issued from the timer 5, and when the memory device 3 is reset, the low-level speed reference signal IQ is no longer issued, and the initial normal operation is restored.

In fact, after a predetermined period of time has elapsed (SIO), it is checked whether the elevator is running (S11), and when the elevator is not running, normal operation is resumed.

When a large earthquake occurs that activates the second seismic sensor, if the elevator is running, it is stopped at the nearest floor and the doors are opened (813, 814°, 515). Then, after a predetermined period of time has elapsed, the door is closed (816), and it is checked whether the door opening button is pressed in the car (S17), and if it is not pressed, the operation is stopped (317). Door open at 817? If the button is pressed, the process returns to 815 and the above-described operation is repeated.

This device performs the following overall control operation when an earthquake occurs.

A specific example of a circuit for carrying out low-speed operation when a low-level earthquake occurs, which is the main part of the present invention, will be explained below.

FIG. 3 shows a specific example of this, and 12 in the figure is the first
This solenoid coil 12 is energized when a contact JJa1 (normally open) of a reset relay (not shown) is closed, and the first seismic sensor is reset.

11as is also the contact point (normally open) of this reset relay,
When the contact 11a1 is closed, the inner contact 1cI is also closed at the same time, and the low-speed operation relay 13 is energized from this contact 11alIc.

I Jal~13a3 is a normally open contact of this low speed operation relay 13, JJb is a normally closed contact of the low speed operation relay 13, and 15 is a contact 13a! The timer 15b is a contact (normally closed) that opens when the timer 15 times up, and by energizing the low-speed operation relay 13, 1) In the circuit P-xsb-13 & 1-13-N, 13 is It has become self-preserving. Note that P is the positive line of the DC power supply, and N is the negative line of the DC power supply. The timer 15 is preset to the time during which low-speed operation is continued after the earthquake subsides, and is set in units of several hours.

Therefore, the contact 15b of the timer 13 is closed during this period, so that the relay 13 can continue to be self-held. The set time of the timer 13 is variable and can be changed as appropriate depending on the strength and continuation of the earthquake.

On the other hand, numeral 9 is the speed reference generator mentioned above, and as is well known, it emits a speed reference signal 10t from its output terminal 9P. The traveling speed of the elevator is controlled by the level of this signal.

This speed reference generator 9 has an input terminal 9H for mode selection.
, 9L, and when the former is input, the mode is set to the normal rated speed, and when the latter is input, the mode is set to low-speed operation. When the contact 13a3 is closed, the positive side line P of the power supply is connected to the input terminal 9L for low speed operation command of the speed reference generator 9 via this contact 13a.
Since more signals are allowed to enter, the speed reference signal 10 is at a low level. Moreover, when the contact 13b is closed,
This contact JJb is connected to the input terminal 9H of the speed reference generator 9.
A signal is input from the positive line P of the power supply via the speed reference signal 10, which is a high level signal necessary for normal rotation speed.

In addition, 21a is a relay contact (normally open) that operates when the elevator is running, and is connected in parallel to contact 15b, so that if the elevator is running when the relay 13 is operated, the relay 13 is self-maintained. I try to keep it.

In such a configuration, when only the first seismic sensor 2 is activated, the contacts 11 & 1 of the reset relay (not shown) are closed by manual or automatic operation when the earthquake subsides, so the first seismic sensor 2 is activated. will be reset. At the same time, the contact 11a2 is also closed and the low-speed operation relay 13 is energized, so
The low-speed operation relay 13 is self-maintained by the circuit P-15b-13ml-13-N. This closes the contact 13kl, and the timer 15 starts measuring time. The timer 15 is preset to the time during which low-speed operation is continued after the earthquake subsides, and is set in units of several hours. Therefore,
During this period, the contact 15b is closed, so the low-speed operation relay 13 continues to maintain itself.

On the other hand, the speed reference generator 9 generates a speed reference signal 10 from its output terminal 9P, and the running speed of the elevator is controlled based on the high and low voltages of this signal level.

Since the low speed operation relay 13 is currently operating, the contact 13
a3 is closed and a signal enters the input terminal 9L of the speed reference generator 9, so the speed reference signal 1° becomes low level.

Further, at this time, the contact 13b is open and no signal enters the input terminal 9H, so the speed reference signal 10 does not become a high level signal required for the normal operating speed.

As described above, the elevator continues to operate at a speed lower than the normal operating speed after resetting the tenth seismic sensor 2.

The low speed level is appropriately selected in advance depending on the structure of the building in which the elevator is installed and the type of carpenter of the elevator, and is, for example, about 1/3 to 1/2 of the normal operating speed.

When this low-speed operation reaches the set time of the timer 15, the contact 15b opens. At this time, if the contact point 21m of the relay (not shown) that operates while the vehicle is running is open, the low-speed operation relay 13 will not lose its self-holding status and will return to its original state. If the vehicle is running, the relay 13 will not return because the contact 21h is closed, and the vehicle will continue to operate at low speed, stop at the floor position, and contact 21h will close.
Returns after h is opened. Therefore, the vehicle does not suddenly switch to normal speed while traveling at low speed.

When the return operation by the timer 15 is completed as described above, the elevator returns to its original normal operation.

As described above, according to this embodiment, when the elevator enters the earthquake control operation mode when a relatively low-level earthquake occurs, when the earthquake subsides, the first seismic sensor After resetting the elevator, the elevator was operated at low speed for a predetermined period of time before normal operation was resumed, so in the unlikely event that the earthquake caused an abnormality in the car or hoistway equipment, the elevator started operating. Even if an accident occurs at low speed, 0'''C damage can be kept to a minimum.In particular, damage to cars with passengers, hoistway equipment and building structures protruding from the elevator part of the car can be minimized. Or, it is effective in the case of a collision with a shear weight that is about to dislodge.The collision energy is proportional to the square of the running speed, so for example, 1 of the rated speed.
/2 and 1/3, respectively l/4 and l/9
This greatly improves safety.

In addition, it is not uncommon for earthquakes to occur in succession with the first wave followed by second and third waves, and as in the present invention, when restarting operation after an earthquake, it is recommended to operate at a low speed for a predetermined period of time. If you do that, there will be a second wave.

Accidents caused by the earthquake pressure of the third wave can also be kept to a minimum in the same way as above.

Another effect of the present invention is that it provides passengers with a sense of security. In other words, even after the earthquake subsides and operations are restored, passengers begin to fear using elevators. However, if the vehicle is operated at a low speed as in the present invention, a sense of security can be provided and there is no need to cause major disruption to passenger transportation.

Further, as another embodiment of the present invention, as shown in FIG. 4, a low speed operation indicator light 20 may be provided in series with the contacts 13 & 4 of the low speed operation relay 13. This indicator light 20 is appropriately provided in the landing area or inside the car. In addition, information such as ``low-speed operation in case of an earthquake'' or ``low-speed operation will be carried out for a while due to an earthquake'' will be placed on the indicator light.

This can further improve the sense of security given to passengers and prevent confusion.

It should be noted that the present invention is not limited to the embodiments described above and shown in the drawings, but can be implemented with appropriate modifications within the scope of the gist.For example, in the above embodiment, the first seismic sensor is reset. Although the vehicle is configured to operate at low speed later, it is also possible to perform low-speed operation according to the present invention after performing the unmanned automatic test operation described in the conventional example, and in this case, safety can be further improved. can be done.

The above embodiment is the first embodiment. Although we have described the device equipped with the second seismic sensor, the first one is equipped with a seismic sensor. Of course, it is also possible to apply the present invention as an earthquake operation device after resetting the first seismic sensor of an elevator equipped with a second, third or more seismic sensor.

[Effects of the Invention] As explained above, according to the present invention, after resetting the first seismic sensor, the speed reference generator generates a speed reference signal lower than that during rated operation for a predetermined period of time to initiate low-speed operation. By doing this, even if the corner collides with another obstacle, the damage can be kept to a minimum.It is not just a fool's errand, but it can improve the sense of security for elevator users after an earthquake occurs. Therefore, it is possible to provide an elevator operation system during an earthquake that is extremely effective as a means for restoring operation without inspection by a specialized engineer.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the present invention, FIG. 2 is an operation flowchart for explaining the operation of this device, FIG. 3 is a circuit diagram showing a specific embodiment of the present invention, and FIG. 4 FIG. 3 is a circuit diagram showing additional elements used in another embodiment of the present invention. 2...First seismic sensor, 3...Storage device, 5,15...
・Timer, 7...Low speed operation command device, 9...Speed reference generation IT, 11&1.11&2...Reset relay contact, 12...Trenoid coil for reset, 13
...Low speed operation relay, 13&1~13a4.13b
...Low speed operation relay 'contact, 20...Low speed operation indicator light during earthquake. Applicant's agent Patent attorney Takehiko Suzue Procedural amendments Showa 12. Kunio Ogawa, Director-General of the Japanese Patent Office1, Indication of Case Patent Application No. 61-2317412, Title of Invention: Elevator Earthquake Operation Device 4, Agent: 3, Kasumigaseki, Chiyoda-ku, Tokyo Chome 7-2 UBE Building 6,
Subject of amendment 7, content of amendment (1) rS stated in page 12, line 10 of the specification
Correct 17J to r S 18J.

Claims (1)

[Claims] A first seismic sensor that operates with vibrations above a relatively small predetermined level, and a second seismic sensor that operates with vibrations that are greater than the predetermined level.
a seismic sensor, and when the first seismic sensor is activated, the car is stopped at the floor position, and when the second seismic sensor is activated, the operation of the elevator is stopped; In an earthquake operation system for an elevator, wherein when only the first seismic sensor is operating, the operation of the elevator is resumed after a certain period of time has elapsed, and the elevator is operated at a speed matching a speed reference outputted from a speed reference generating means. , a timer is provided which operates for a predetermined period of time and generates a low-speed operation command when an operation restart command is given when only the first seismic sensor is operating, and the speed reference generating means generates a speed reference for operating the elevator at the rated speed. and a low-speed mode that generates a speed standard for causing the elevator to run at a speed lower than the rated speed when receiving a low-speed operation command from the timer.